.With a capacity of 2500mAh and a very precisely built semi-soft case these batteries will give you more runtime and more stable voltage throughout the race. The pack is available with the uni plug in a hump layout. Latest Team Orion LiPo technology Precisely built semi-soft construction High capacity Outstanding performance Light weight Uni plug Batteries Chemistry: LiPo LiPo Capacity: 2500 2500 mAh Voltage: 7.4 7.4V Connector: Universal Universal Balancer: XH XH Dimensions and Weight Length: 55mm Width: 31mm Height: 31mm Weight: 104g